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viva [34]
3 years ago
9

7. Write an expression that is equivalent to

Mathematics
1 answer:
Alborosie3 years ago
7 0

Answer:

5r - 40

Step-by-step explanation:

If you simplify 5(r - 8), you will get 5r - 40. This is called distributed property.

Hope this helps, thank you !!

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Step by step to find the scientific notation for 1.3 x 10^9?
lakkis [162]

Answer:

117000000000

Step-by-step explanation:

117000000000

=1.17^11

or 1.17e+11

8 0
2 years ago
What is the equation for a line passing through (-2,3) and perpendicular to y= -1/2+1 ?
nata0808 [166]

Answer:

y=2x+7

Step-by-step explanation:

<u><em>The correct question is</em></u>

what is the equation for a line passing through (-2,3) and perpendicular to y= -1/2<em>x</em>+1 ?

Remember

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes are equal to -1)

The slope of the given line is m=-1/2

so

the opposite reciprocal is m=2

<em>Find the equation of the line in point slope form</em>

y-y1=m(x-x1)

we have

m=2\\point\ (-2,3)

substitute

y-3=2(x+2)

<em>Convert to slope intercept form</em>

y=mx+b

isolate the variable y

y-3=2x+4

y=2x+4+3

y=2x+7

3 0
2 years ago
Rewrite the equation below to express the cost (c) as a function of miles (m). The charge for a rental car is $20 plus $0.05 per
Alja [10]
The answer is 
c(m) = $20 + $0.05m
5 0
3 years ago
Can you please help?
gogolik [260]

Answer:

sry i cant help you bcoz i havent read this type of exercise yet

8 0
2 years ago
Read 2 more answers
Students at Lincoln middle school earn $5 for every 4 boxes of cookie dough sold during a fundraiser. Students at Williams middl
muminat

Answer:

5x4 = 20

7x6=42

7 0
3 years ago
Read 2 more answers
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